1213623452 has 24 divisors (see below), whose sum is σ = 2177331072. Its totient is φ = 591552000.

The previous prime is 1213623449. The next prime is 1213623469. The reversal of 1213623452 is 2543263121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318068 + ... + 321860.

It is an arithmetic number, because the mean of its divisors is an integer number (90722128).

Almost surely, 2^1213623452 is an apocalyptic number.

It is an amenable number.

1213623452 is a deficient number, since it is larger than the sum of its proper divisors (963707620).

1213623452 is a wasteful number, since it uses less digits than its factorization.

1213623452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5789 (or 5787 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 1213623452 is about 34837.0987885042. The cubic root of 1213623452 is about 1066.6648568112.

Adding to 1213623452 its reverse (2543263121), we get a palindrome (3756886573).

The spelling of 1213623452 in words is "one billion, two hundred thirteen million, six hundred twenty-three thousand, four hundred fifty-two".